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model: QHQ-A

According to G B / T 5 7 3 9 -1 9 9 6 design and manufacture. Instrument for the mechanical, three-point contact with the measured surface) two points for the Lun, is the refill), always ensure that the test film formed 45 degrees angle, force level to promote instrument movement, Can be completed testing process to determine the ability of coating resistance to deformation.This method is designed and manufactured by hand, in pencil, said for coating hardness determination.

I. Uses:

Pencil hardness test method is a widely used test method since the 1980s, and has been widely applied in the field of coating, such as paints, paints, Development of research and industrial production in the promotion of this test method.This instrument is based on national standards 'film hardness pencil determination'GB6379-86"No. 2, 3The instrument can be used in the laboratory can also be applied to the construction site, and in any direction on the coating hardness of the identification.

2. Structure and working principle

Instrument for the mechanical, three-point contact with the measured surface (two points for the wheel, a point of lead) always ensure that the pencil and the measured surface 45° angle, used to promote the movement of the instrument, you can complete the testing process.

3. Requirements for use

1. GB1279-79"Film general preparation method" Preparation of three pieces, generally smooth tinplate 120X50X (O.2-0.3) Mm,Or as specified in the product and the size of the substrate.

2Test conditions: according to product standards or construction requirements of the conditions.